S1 – Supporting Information – Can One Predict Changes from S N 1 to S N 2 Mechanisms? Thanh Binh Phan, Christoph Nolte, Shinjiro Kobayashi, Armin R. Ofial, and Herbert Mayr* Department Chemie und Biochemie der Ludwig-Maximilians-Universität München, Butenandtstrasse 5-13 (Haus F), 81377 München, Germany Herbert.Mayr@cup.uni-muenchen.de